Pray tell what this resolution is. More then 800 years or so?
Definitely more than that, but I can't tell you accurately (that would take more research effort than I can spare at this time). But... when you're looking at Paleozoic events, there are no sediment cores that go back that far. (Oldest sediments on the seafloor are about 200 million years old, which is lower Jurassic, i.e. Mesozoic). In the Paleozoic, paleoclimatologists look at geological formations. If they could resolve events at 50,000 year resolution (which is meaningful for periods lasting 65 million years), I'd be impressed.